Brace.



. UNITED. STATES PATENT QTTTCT.:

GUY M. ovnn'rnnn, or ronr'coLLiNs, AND voLLnY v. MQMILLniv, l orLAFAYETTE,- f,

, coLonAno. .y

To all whom it may concern: Y Y f Be it known that we, GUY M. OVERTREE,a citizen of the United States, residingjat Fort` Collins, in `thecounty yof Larimer and State of Colorado, and VOLLEY V. LEN, a citizenof the Unitedv States, residing at Lafayette, in the county of Boulderand State of Colorado, have invented certain new and usefulImprovements. Braces, of

which the following is a specification.

This invention-relates to improvements'in braces and its primary objectresides in providing in combination with a crank for rotating tools,nuts and screws, means by which the rotation of an object to which thecrank is applied may be eifected independent of the crank movement forthe purpose of applying and tightening nuts and screws at points locatedso as to forbid the use 'of an ordinary brace, wrench or screw-driver.

Our invention may also be effectively used as a substitute for the handin applying nuts to studs or bolt-ends and it greatly facilitates thesubsequent placement of the brace yin 'its proper position with relationto the nuts.

With the above obj ect in view we provide in associa-tion with a braceof standard construction, a movement transmitting mechanism by which thesocketed holding member of the instrument may be rotated independent ofthe crank on which it. is mounted.

The transmission hereinbefore referred to, consists of a worm gear andworm which are connected respectively with the holding member of thebrace and with a shaft rotatably mounted on the brace crank at an angleto the axis of rotation of the same.

In the accompanying drawings in the various views of which like partsare similarly designated,

Figure 1 represents an elevation of a brace to which our invention isapplied,

Fig. 2, a section along the line ,2f-2, Fig. 1,

Fig. 3, a front view of the end of the brace at which the holding memberis connected, looking in the direction of the arrow A, Fig. 1, and

Fig. 4, a section taken along the line 4 4, Fig. 2, drawn to an enlargedscale.

Referring to the drawings by numerical reference characters, 2designates the crank of a brace of ordinary construction which at theend of one of its arms connects with a Banen." i A Specification ofLetters Patent Y Patented Aug; 13, 1Q1S :Application led February 21,1917. SerialuNol 150,149. Y. -Y i swiveled vhead yand which carriesattheend v angular section which .is removably Ytted in thehub `6 of faworm gear 7.' The hub of the gear is rotatably a keeper 8 which by meansof an integral thimbleV 9 and a pin 10, is rigidly secured at the end ofthe brace arm 12 opposite to that which connects with the swiveled head,and

a screw 13 projects through a threaded aperture of the keeper into acircumferential groove of the hub to hold the worm-gear against axialdisplacement.

With the parts thus relatively positioned the coincident axes of thesocketed chuck 4.-

and the worm-gear 7 are in alinement with the axis of rotation of thehead 3.

A worm 14 cooperative with the worm wheel is mounted at the end of ashaft 15 which extends parallelly alongside the arm 12 ef the brace towhich the keeper is app 1e The shaft has at its outer end a crank 16 tofacilitate its rotation and it is rotatably supported in two bearings 17and 18 one of which is secured to the brace arm and the other one ofwhichis formed integral with the keeper 8.

The last-mentioned bearing is as best shown in Fig. 2, preferablycomposed of two parts between which the worm is disposed.

Having thus described the mechanical construction of our invention, itsuses and advantages will be readily understood.

To apply a nut to a threaded stud or bolt, the nut may be placed in the'socket of the holding member and thus brought in contact stadiaimparting a partial rotation to the brace position through theinstrumentality of the' Worm movement. Y

It Will thus be seen that the latter vin addition to ele-cting therotary movement of the holding member', independent of the crank motionof the brace,v also serves as an equivalent for the appliances used inbraces of the ratchet type for rotating the tool or nut-holder by asuccession of partial rotations of the crank of the same.

In applying the brace to a nut or angular bolt-head the socketed chuckcan be readily adjusted to fit the same by rotation of the crank.

Having thus described our invention What We claim and desire to secureby Letters- Patent is z' 'for rotation With said Worm Wheel, a rota-ryshaft extending along said arm, a Worm at one end of said shaft, in meshwith said gear, shafty to effect its rotation.

In testimony whereof We have affixed Kour signatures in presencel oftvvo Witnesses.

GUY M. OVERTREE. VOLLEY V. MClVHLLEN. Y.

Witnesses: Y

G. J.y ROLLANDET, L. RHOADES.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. G.

and a crank at theopposite end of the

